[S390] dasd: optimize cpu usage in goodcase

remove unnecessary dbf call, remove string operations for magic

Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index 31849ad5e59f..403730cfaf8e 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -152,8 +152,8 @@ dasd_fba_check_characteristics(struct dasd_device *device)
         block->base = device;
 
         /* Read Device Characteristics */
-        rc = dasd_generic_read_dev_chars(device, "FBA ", &private->rdc_data,
-                                         32);
+        rc = dasd_generic_read_dev_chars(device, DASD_FBA_MAGIC,
+                                         &private->rdc_data, 32);
         if (rc) {
                 DBF_EVENT(DBF_WARNING, "Read device characteristics returned "
                           "error %d for device: %s",
@@ -305,8 +305,7 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev,
                 datasize += (count - 1)*sizeof(struct LO_fba_data);
         }
         /* Allocate the ccw request. */
-        cqr = dasd_smalloc_request(dasd_fba_discipline.name,
-                                   cplength, datasize, memdev);
+        cqr = dasd_smalloc_request(DASD_FBA_MAGIC, cplength, datasize, memdev);
         if (IS_ERR(cqr))
                 return cqr;
         ccw = cqr->cpaddr;